寻找一个低成本控制压电陶瓷蜂鸣器的芯片-cmi-1240-smt.pdfFor more information, please visit the product page CUI Inc MODEL: CMI-1240-SMTDEscr iptION: PIEZO BUZZER INDICATOR date 05/13/2013 page 3 of 3 REVISION HSTORY rev. descr iption date 1.0 initial release 06/03/2005